Roy H. Østensen, Hans Van Winckel
Population synthesis models predict that the majority of sdBs form through
stable mass transfer leading to long period binaries. To date, about a hundred
close short-period binaries with an sdB component have been found, but not a
single long-period system has been established. We show preliminary results
from our recent effort in determining orbits for a sample of long-period sdB
systems using the HERMES spectrograph on the Mercator telescope.
View original:
http://arxiv.org/abs/1112.0977
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